US6079636A - Fuel injection valve with a piezo-electric or magnetostrictive actuator - Google Patents
Fuel injection valve with a piezo-electric or magnetostrictive actuator Download PDFInfo
- Publication number
- US6079636A US6079636A US09/180,850 US18085098A US6079636A US 6079636 A US6079636 A US 6079636A US 18085098 A US18085098 A US 18085098A US 6079636 A US6079636 A US 6079636A
- Authority
- US
- United States
- Prior art keywords
- fuel
- pump piston
- spray
- fuel pressure
- fuel injection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 128
- 238000002347 injection Methods 0.000 title claims abstract description 48
- 239000007924 injection Substances 0.000 title claims abstract description 48
- 238000002485 combustion reaction Methods 0.000 claims abstract description 6
- 239000012528 membrane Substances 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 7
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 230000004044 response Effects 0.000 claims description 6
- 238000004804 winding Methods 0.000 description 5
- 239000002826 coolant Substances 0.000 description 4
- 230000001419 dependent effect Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 229920002457 flexible plastic Polymers 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
- F02M61/08—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series the valves opening in direction of fuel flow
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/04—Pumps peculiar thereto
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M57/00—Fuel-injectors combined or associated with other devices
- F02M57/02—Injectors structurally combined with fuel-injection pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M57/00—Fuel-injectors combined or associated with other devices
- F02M57/02—Injectors structurally combined with fuel-injection pumps
- F02M57/022—Injectors structurally combined with fuel-injection pumps characterised by the pump drive
- F02M57/027—Injectors structurally combined with fuel-injection pumps characterised by the pump drive electric
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
- F02M59/46—Valves
- F02M59/462—Delivery valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/21—Fuel-injection apparatus with piezoelectric or magnetostrictive elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/0057—Means for avoiding fuel contact with valve actuator, e.g. isolating actuators by using bellows or diaphragms
Definitions
- the present invention relates to a fuel injection valve with a piezoelectric or magnetostrictive actuator.
- a fuel injection valve with a piezoelectric actuator is described in, for example, German Published Patent Application No. 195 00 706.
- the piezoelectric or magnetostrictive actuator controls a working piston that acts upon a stroke piston via a hydraulic path transformer.
- the stroke piston is connected in a positive-locking manner via a needle valve to a valve closing member provided on a spray-discharge opening.
- the piezoelectric or magnetostrictive actuator is thus connected via the hydraulic path transformer in a force-locking manner to the valve closing member. If a suitable electric voltage is applied to the actuator, it expands and displaces the working piston accordingly.
- a fuel injection valve according to the present invention has the advantage that the fuel is injected with a relatively high injection pressure.
- an additional compression of the fuel takes place with a pump piston that can be activated using a piezoelectric or magnetostrictive actuator so that the fuel pressure prevailing in a fuel pressure line between the pump piston and a spray-discharge nozzle is significantly greater than the fuel pressure prevailing in the fuel intake line.
- the actuation of the spray-discharge nozzle takes place hydraulically in that the spray-discharge nozzle opens if the fuel pressure prevailing in the fuel pressure line exceeds a predetermined threshold.
- the piezoelectric or magnetostrictive actuator provides both an increase of the injection pressure, as well as a hydraulic actuation of the spray-discharge nozzle.
- the fuel volume to be compressed by the pump piston is relatively small and is limited only to the volume of the relatively short practicable fuel pressure line as well as the volume within the spray-discharge nozzle which is likewise practicable with very small dimensions.
- the damage space allocated to the pump piston is thus relatively small so that a relatively small stroke of the pump piston suffices.
- the thermal linear expansion compensation of the actuator required in conventional fuel injection valves can be entirely eliminated since the spray-discharge nozzle is actuated hydraulically instead of mechanically via a stroke piston and a needle valve. Slight temperature-dependent displacements of the pump piston due to a temperature-dependent linear expansion of the actuator connected to the pump piston are thus not harmful to the function of the fuel injection valve according to the present invention.
- the modular design of the fuel injection valve according to the present invention enables an easy-to-assemble plug-in solution that can be assembled within a relatively short assembly time either semiautomatically or fully automatically.
- the actuator according to the present invention can be advantageously connected in a force-locking manner via a coupling device containing a partial-sphere-shaped bearing element to the pump piston.
- the partial-sphere-shaped bearing element ensures that radial forces exerted by the actuator to the translatory main force do not influence in a disruptive manner the translation motion of the pump piston.
- the pump piston can be formed particularly advantageously cup-shaped with a fuel prechamber surrounding a central tongue.
- the central tongue serves to introduce the force of the pressure force exerted by the actuator. Due to the cup-shaped formation of the pump piston, it has a particularly low mass inertia, thereby decreasing additionally the response time of the fuel injection valve according present invention.
- a fuel prechamber is integrated within the pump piston, thereby yielding a particularly compact type of construction.
- the fuel prechamber may be advantageously sealed with respect to the actuator or the parts accommodating the actuator through a flexible membrane. In this manner, no problematic sealing places result that can produce leakage or wear, e.g., when using a sealing ring. No particular requirements are made of the crushing strength of the membrane since the membrane has only the fuel intake pressure acting upon it.
- a non-return valve preventing a backflow of the fuel from the fuel pressure line into the fuel prechamber can be arranged advantageously directly at the entrance of the fuel pressure line.
- the non-return valve can have a valve piston that forms a seated valve together with a seat surface surrounding an outlet port of the pump piston.
- a second non-return valve is provided at the outlet of the fuel pressure line or rather at the entrance of the spray-discharge nozzle, which second non-return valve ensures that the fuel pressure does not decrease within the spray-discharge nozzle during the suction stroke of the pump piston.
- FIG. 1 illustrates an axial section of an exemplary embodiment of the present invention.
- FIG. 2 illustrates an enlarged representation of a spray-discharge-side end of the exemplary embodiment of the present invention.
- FIG. 1 shows, in an axial transverse representation, an overall view of a fuel injection valve 1 according to the present invention.
- a piezoelectric actuator 2 is located within an actuator housing 3 and can have an electric supply voltage applied to it via electric supply cables 4.
- the piezoelectric actuator 2 can be formed as a multilayer piezostack. Instead of the piezoelectric actuator, a magnetostrictive actuator 2 can be used in the same manner.
- the piezoelectric actuator 2 is accommodated on its free ends by two receiving elements 5, and 6. On its end turned away from a pump piston 7 to be described in greater detail, the piezoelectric actuator 2 is supported via the receiving element 5 in a bearing block 8 that is fastened via a winding 9 on the actuator housing 3.
- the receiving element 5 includes, in the area of a longitudinal axis 12 of the actuator 2 or of the fuel injection valve 1, a projection 13 that lies adjacent to the inside end face 11 of the bearing block 8.
- the actuator 2 On its end adjacent to the pump piston 7, the actuator 2 is supported in a further receiving element 6 that has a ring-shaped opening 14 for accommodating a spring washer 15.
- the spring washer 15 provides axial prestressing of the actuator 2 to clamp the actuator 2 with a predetermined compressive stress between the receiving elements 5 and 6.
- a ring space 16 formed between the actuator 2 and the actuator housing 3 can have a liquified or gaseous coolant flowing through it, if necessary, which flows in via a coolant supply opening 17 and flows out via a cooling medium discharge opening (not shown).
- the actuator housing 3 On its end adjacent to the pump piston 7, the actuator housing 3 has an outer winding 18 that can be screwed into a corresponding inner winding 19 of a valve block 20.
- The, valve block 20 can be connected via a winding 21 to a cup-shaped nozzle locking member 22.
- the actuator housing 3, the valve block 20, and the nozzle locking member 22 can be preassembled as a unit before the fuel injection valve 1 is introduced as a unit into a stepped bore hole 23 of a cylinder head 24 of an internal combustion engine.
- the fuel injection valve 1 is locked using a bushing 25 on the cylinder head 24.
- the bushing 25 can be screwed into a winding 26 of the stepped bore hole 23 of the cylinder head 24 and contacts, for this purpose, on an end face 27 of the valve block 20.
- the bushing 25 has a tool engaging member 28, e.g., in the form of an outer hex socket, on which a suitable tool, e.g., a wrench, can engage.
- a ventilation bore hole 29 for ventilation purposes, which can be closed.
- a feeding of the fuel takes place via a fuel intake line 30 running at least partially within the cylinder head 24.
- the sealing of the bushing 25, the valve block 20, and the nozzle closing member 22, in each case with respect to the cylinder block 24, takes place via suitable sealing means 31-33 which can be formed, e.g., as O-rings.
- FIG. 2 shows an enlarged representation of the spray-discharge-side end area of the fuel injection valve according to the present invention shown in FIG. 1. Elements already described are provided with matching reference numbers.
- the valve block 20 is provided with an axial stepped bore hole 40 that extends axially through the entire valve block 20.
- the cup-shaped and axially-symmetrically-formed pump piston 7 is inserted into a guide segment 41 of the stepped bore hole 40.
- the pump piston 7 has, in the area of the longitudinal axis 12, a central tongue 42.
- the central tongue 42 is surrounded by a ring-shaped fuel prechamber 43 that is connected via radial bore holes 94 provided in the valve block 20 to the fuel intake line 30.
- the fuel prechamber 43 is sealed using a flexible membrane 44 that can be made of, e.g., a flexible plastic material with respect to the actuator 2 or rather with respect to the actuator housing 3, the receiving element 6 and particularly with respect to the ring space 16 accommodating the coolant.
- the membrane can have at least one ring-shaped circumferential enlargement 45 to simplify the deformation. Since the membrane 44 only has a fuel intake pressure prevailing in the fuel intake line 30 acting upon it, no special requirements are made of the crushing strength of the membrane 44. The fuel intake pressure is equal to, e.g., only 3-4 bar. Sealing using the flexible membrane 44 has the advantage that leakage or wear is avoided which can occur, for example, when using a sealing ring following a longer operating interval of the fuel injection valve 1.
- the receiving element 6 adjacent to the pump piston 7 has on an end face 46, opposite the pump piston 7, a spherical opening 47 into which a partial-sphere-shaped, e.g., hemispherical, bearing element 48 is inserted.
- the bearing element 48 lies opposite the central tongue 42 of the pump piston 7 and is separated from it by the flexible membrane 44.
- the receiving element 6 is, tiltable with respect to the bearing element 48 due to the spherical formation of the boundary surface in certain boundaries. If the receiving element 6 tilts slightly with respect to the longitudinal axis 12 when the actuator 2 is actuated, full-surface contact of the bearing element 48 on the membrane 44 and thus directly on the central tongue 42 of the pump piston 7 is not impaired.
- the pump piston 7 has a hollow-cylindrical-shaped wall segment 52 that is guided in the guide segment 41 of the stepped bore hole 40. On its spray-discharge-side end, the pump piston 7 has a central outlet port 53 that is connected via cross bore holes 54 to the ring-shaped fuel prechamber 43. The outlet port 53 of the pump piston 7 discharges into a fuel pressure line 60. At the inlet of the fuel pressure line 60, there is a first non-return valve 61 in the shown exemplary embodiment. In the exemplary embodiment, the first non-return valve 61 is made of a cylindrical valve piston 62 that is pressed using a spring element 93, e.g., a helical spring, against the end surface 49 of the pump piston 7.
- a spring element 93 e.g., a helical spring
- valve piston 62 interacts with the pump piston 7 to form a flat seated valve, the valve piston 62 sealingly abutting in a closed position of the non-return valve 61 on a seating surface 63 surrounding the outlet port 53 of the pump piston 7 and raising when the non-return valve 61 is opened from the seating surface 63.
- the end face 49 and the contact surface 50 delimit a pump chamber 90 whose volume is determined by the axial position of the pump piston 7 and which is connected via preferably multiple, e.g., three, connecting slots 64 surrounding the valve piston 62 to the fuel pressure line 60.
- a second non-return valve 71 At the outlet of the fuel pressure line 60 or rather at the entrance of a spray-discharge nozzle 70 to be described in more detail, there is a second non-return valve 71.
- the second non-return valve 71 is made of a valve seat 72 closing the fuel pressure line 60.
- the valve seat 72 is closable by a valve member 73, which is spherical in the exemplary embodiment.
- the valve member 73 is pressed using a spring element 74 against the valve seat 72.
- a nozzle member 75 Downstream from the second non-return valve 71, there is a nozzle member 75 with a spray-discharge opening 76.
- the spray-discharge opening 76 is sealable using a valve closing member 77, which is connected to a spring disk 80 using a needle valve 79.
- the needle valve 79 penetrates an axial longitudinal bore hole 78 of the nozzle member 75.
- a prestressed resetting spring 82 e.g., a helical spring, is clamped which prestresses the valve closing member 77 of the outwards opening spray-discharge nozzle 70 in a closed position.
- the fuel flows into the nozzle member 75 via a segment 83 of the stepped bore hole of the valve block 20 used to accommodate the non-return valve 71 and the nozzle member 75 and is directed through this using radial bore holes 84 through to the longitudinal bore hole 78 surrounding the needle valve 79 and finally to the spray-discharge opening 76.
- the fuel flows via the fuel intake line 30 into the prechamber 43.
- the piezoelectric actuator 2 has the supply voltage applied to it, it expands as a function of a magnitude of the supply voltage. Based on the axial expansion of the actuator 2, the axial position of the pump piston 7 is determined, which is held in contact using the spring washer 51 on the bearing element 48 and on the receiving element 6 connected to the pump-piston-side free end of the actuator 2. If the supply voltage of the actuator 2 is reduced, its axial expansion reduces so that the pump piston 7 moves in the direction towards the actuator 2 and the volume of the pump chamber 90 formed between the end face 49 of the pump piston 7 and the contact surface 50 of the valve block 20 is increased.
- the second non-return valve 71 opens so that fuel under an increased pressure flows out of the fuel pressure line into the inner volume 91 of the spray-discharge nozzle 70.
- the fuel pressure prevailing in the inner volume 91 of the spray-discharge nozzle 70 acts upon the valve seat 77 with a controlling force directed in the direction of the spray-discharge opening 76.
- the valve closing member 77 connected via the needle valve 79 to the spring disk 80 releases the spray-discharge opening 76 so that the fuel is injected into a frontally arranged combustion chamber 92 of the internal combustion engine.
- the threshold of the pressure at which the spray-discharge nozzle 70 opens is dependent on the restoring force exerted by the resetting spring 82 and is specifiable via the spring constant and prestressing of the resetting spring 82.
- the actuator 2 of the fuel injection valve 1 thus fulfills two functions: On the one hand, by means of the pump piston 7 driven by the actuator 2, a pressure increase of the fuel is achieved so that the spray-discharge pressure of the fuel is significantly greater than the fuel intake pressure prevailing in the intake line 30. Very good injection properties are achieved due to the increased spray-discharge pressure of the fuel. On the other hand, the actuator 2 provides indirect hydraulic actuation of the spray-discharge nozzle 70.
- the hydraulic actuation of the spray-discharge nozzle 70, or rather, the valve closing member 77 has the advantage of low mass inertia of the overall system and thus a low response time.
- the intake paths are relatively short, thereby avoiding cavitation problems.
- a contaminant space between the pump piston 7 and the spray-discharge opening 76 has a relatively small volume, which additionally reduces the response time of the fuel injection valve 1.
- Thermal linear expansion compensation of the actuator 2 is not necessary since slight static displacements of the pump piston 7 have no influence on the dynamic function of the fuel injection valve 1.
- a ring gap remaining between the wall segment 52 of the pump piston 7 and the guide segment 41 of the axial longitudinal bore hole 40 likewise has no critical influence on the dynamic response of the fuel injection valve 1 according to the present invention.
- the ring gap and thus the piston play of the pump piston 7 can equal 3-4 ⁇ m without any problem, without the leakage occurring at the ring gap influencing the injection quantity significantly. Since the regulating time of the actuator 2 is on the order of magnitude of 1 ms, no significant leakages occur during the regulating time of the pump piston 7 on the ring gap between the wall segment 52 and the guide segment 41.
- the fuel injection quantity can be influenced by the magnitude of the supply voltage which is applied to the piezoelectric actuator 2 since the expansion of the actuator 2 is proportional to the supply voltage.
- the supply voltage is on the order of magnitude of up to 1000 V. However, other piezostacks with a lower voltage are also possible.
- pump pistons 7, non-return valves 61 and 71, and spray-discharge nozzles 70 in other known forms can be used.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19712921 | 1997-03-27 | ||
DE19712921A DE19712921A1 (de) | 1997-03-27 | 1997-03-27 | Brennstoffeinspritzventil mit piezoelektrischem oder magnetostriktivem Aktor |
PCT/DE1998/000080 WO1998044256A1 (de) | 1997-03-27 | 1998-01-12 | Brennstoffeinspritzventil mit piezoelektrischem oder magnetostriktivem aktor |
Publications (1)
Publication Number | Publication Date |
---|---|
US6079636A true US6079636A (en) | 2000-06-27 |
Family
ID=7824816
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/180,850 Expired - Fee Related US6079636A (en) | 1997-03-27 | 1998-01-12 | Fuel injection valve with a piezo-electric or magnetostrictive actuator |
Country Status (7)
Country | Link |
---|---|
US (1) | US6079636A (de) |
EP (1) | EP0910740A1 (de) |
JP (1) | JP2000511614A (de) |
KR (1) | KR20000015898A (de) |
CZ (1) | CZ291253B6 (de) |
DE (1) | DE19712921A1 (de) |
WO (1) | WO1998044256A1 (de) |
Cited By (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6345771B1 (en) | 2000-06-30 | 2002-02-12 | Siemens Automotive Corporation | Multiple stack piezoelectric actuator for a fuel injector |
US6400066B1 (en) | 2000-06-30 | 2002-06-04 | Siemens Automotive Corporation | Electronic compensator for a piezoelectric actuator |
US6499471B2 (en) | 2001-06-01 | 2002-12-31 | Siemens Automotive Corporation | Hydraulic compensator for a piezoelectrical fuel injector |
US6570474B2 (en) | 2000-02-22 | 2003-05-27 | Siemens Automotive Corporation | Magnetostrictive electronic valve timing actuator |
US20040011899A1 (en) * | 2001-06-22 | 2004-01-22 | Gunter Dantes | Fuel injection valve |
US6685113B1 (en) * | 1999-10-22 | 2004-02-03 | Robert Bosch Gmbh | Actuator |
US20040041037A1 (en) * | 2000-10-12 | 2004-03-04 | Wendelin Klugl | Injection valve comprising a pump piston |
US20040074478A1 (en) * | 2001-01-22 | 2004-04-22 | Roger Potschin | Device for shaping a flexible injection pressure profile by means of a switchable actuator |
US20040074999A1 (en) * | 2001-08-20 | 2004-04-22 | Gottlob Haag | Fuel injection valve |
US6766965B2 (en) | 2001-08-31 | 2004-07-27 | Siemens Automotive Corporation | Twin tube hydraulic compensator for a fuel injector |
US6820598B2 (en) | 2002-03-22 | 2004-11-23 | Chrysalis Technologies Incorporated | Capillary fuel injector with metering valve for an internal combustion engine |
US20050072863A1 (en) * | 2002-09-27 | 2005-04-07 | Georg Bachmaier | Injector, especially fuel injection valve, with a piezoelectric actor |
US20050199746A1 (en) * | 2003-06-11 | 2005-09-15 | Bernd Bartunek | Valve device and method for injecting a gaseous fuel |
US20050258266A1 (en) * | 2004-05-07 | 2005-11-24 | Mimmo Elia | Multiple capillary fuel injector for an internal combustion engine |
US20050274820A1 (en) * | 2004-06-14 | 2005-12-15 | Bright Charles B | Very high speed rate shaping fuel injector |
US20050274360A1 (en) * | 2004-06-14 | 2005-12-15 | Westport Research Inc. | Common rail directly actuated fuel injection valve with a pressurized hydraulic transmission device and a method of operating same |
US20060169802A1 (en) * | 2005-02-02 | 2006-08-03 | Thomas Pauer | Fuel injector with direct needle control for an internal combustion engine |
EP1715177A1 (de) * | 2005-04-21 | 2006-10-25 | Dell'orto S.P.A. | Piezoelektrisch Aktuator zur Steuerung einer Kraftstoffpumpe und Pumpe-Düse-Einheit |
US20070056570A1 (en) * | 2002-05-10 | 2007-03-15 | Mimmo Elia | Multiple capillary fuel injector for an internal combustion engine |
US20070114881A1 (en) * | 2005-11-18 | 2007-05-24 | Jensen Eric L | Actuator with amplified stroke length |
US20070131800A1 (en) * | 2003-11-12 | 2007-06-14 | Robert Bosch Gmbh | Fuel injector with direct needle control |
US7762478B1 (en) * | 2006-01-13 | 2010-07-27 | Continental Automotive Systems Us, Inc. | High speed gasoline unit fuel injector |
US8113179B1 (en) | 2010-08-10 | 2012-02-14 | Great Plains Diesel Technologies, L.C. | Programmable diesel fuel injector |
US8418676B2 (en) | 2010-08-10 | 2013-04-16 | Great Plains Diesel Technologies, L.C. | Programmable diesel fuel injector |
DE102012014892A1 (de) * | 2012-07-27 | 2014-01-30 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Stellantrieb und Verfahren zum Entwärmen eines in einem Stellantrieb mit einem Stellglied eingehausten Festkörperaktors |
US8683982B2 (en) | 2010-08-10 | 2014-04-01 | Great Plains Diesel Technologies, L.C. | Programmable diesel fuel injector |
US8783229B2 (en) | 2010-06-07 | 2014-07-22 | Caterpillar Inc. | Internal combustion engine, combustion charge formation system, and method |
US9385300B2 (en) | 2013-02-06 | 2016-07-05 | Great Plains Diesel Technologies, L.C. | Magnetostrictive actuator |
US20160354966A1 (en) * | 2013-12-13 | 2016-12-08 | Discma Ag | Piston device comprising a valve controlling the inlet of the piston device |
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---|---|---|---|---|
DE19856202A1 (de) * | 1998-12-05 | 2000-06-15 | Bosch Gmbh Robert | Piezoelektrischer Aktor |
DE19918423A1 (de) * | 1999-04-23 | 2000-10-26 | Denys F Hackert | Einspritzanlage für flüssige Medien |
DE19923422C2 (de) * | 1999-05-21 | 2003-05-08 | Bosch Gmbh Robert | Elektronisches Einspritzsystem |
DE19947071B4 (de) * | 1999-09-30 | 2006-07-27 | Siemens Ag | Geräuschgedämpfte Aktoreinheit |
DE10035168A1 (de) * | 2000-07-19 | 2002-02-07 | Siemens Ag | Stellantrieb, Ventil sowie Verfahren zum Herstellen eines Stellantriebs |
DE10149914A1 (de) * | 2001-10-10 | 2003-04-24 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
DE10248433B4 (de) * | 2002-10-17 | 2015-01-15 | Cummins Ltd. | Vorrichtung zum Fördern von Medien, insbesondere Einspritzvorrichtung für Brennkraftmaschinen von Kraftfahrzeugen |
DE10355645A1 (de) | 2003-11-28 | 2005-07-07 | Robert Bosch Gmbh | Brennstoffeinspritzsystem |
DE10356959A1 (de) * | 2003-12-05 | 2005-06-30 | Robert Bosch Gmbh | Aktormodul |
DE102004039673B3 (de) * | 2004-08-16 | 2006-04-13 | Siemens Ag | Stellantrieb für einen Kraftstoffinjektor einer Brennkraftmaschine, Verwendung für einen derartigen Stellantrieb, sowie Kraftstoffinjektoranordnung einer Brennkraftmaschine |
ATE419520T1 (de) * | 2005-06-20 | 2009-01-15 | Wilharm Peter Dr | Apparatur und verfahren zur automatisierten cetanzahlbestimmung |
JP5104772B2 (ja) * | 2009-02-02 | 2012-12-19 | 株式会社デンソー | 液体噴射供給装置 |
JP2010174865A (ja) * | 2009-02-02 | 2010-08-12 | Denso Corp | 液体噴射供給装置の制御方法 |
CN112431930A (zh) * | 2020-11-23 | 2021-03-02 | 石家庄禾柏生物技术股份有限公司 | 一种密封阀及包含该密封阀的出液结构 |
CN112547329A (zh) * | 2020-11-23 | 2021-03-26 | 石家庄禾柏生物技术股份有限公司 | 一种试剂盒出液装置 |
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US6685113B1 (en) * | 1999-10-22 | 2004-02-03 | Robert Bosch Gmbh | Actuator |
US6570474B2 (en) | 2000-02-22 | 2003-05-27 | Siemens Automotive Corporation | Magnetostrictive electronic valve timing actuator |
US6702250B2 (en) | 2000-02-22 | 2004-03-09 | Siemens Automotive Corporation | Magnetostrictive electronic valve timing actuator |
US6650032B2 (en) | 2000-06-30 | 2003-11-18 | Siemens Automotive Corporation | Electronic compensator for a piezoelectric actuator |
US6400066B1 (en) | 2000-06-30 | 2002-06-04 | Siemens Automotive Corporation | Electronic compensator for a piezoelectric actuator |
US6345771B1 (en) | 2000-06-30 | 2002-02-12 | Siemens Automotive Corporation | Multiple stack piezoelectric actuator for a fuel injector |
US20040041037A1 (en) * | 2000-10-12 | 2004-03-04 | Wendelin Klugl | Injection valve comprising a pump piston |
US6997392B2 (en) * | 2000-10-12 | 2006-02-14 | Siemens Aktiengesellschaft | Injection valve comprising a pump piston |
US20040074478A1 (en) * | 2001-01-22 | 2004-04-22 | Roger Potschin | Device for shaping a flexible injection pressure profile by means of a switchable actuator |
US6843429B2 (en) * | 2001-01-22 | 2005-01-18 | Robert Bosch Gmbh | Device for shaping a flexible injection pressure curve by means of a switchable actuator |
US6499471B2 (en) | 2001-06-01 | 2002-12-31 | Siemens Automotive Corporation | Hydraulic compensator for a piezoelectrical fuel injector |
US6899293B2 (en) * | 2001-06-22 | 2005-05-31 | Robert Bosch Gmbh | Fuel injection valve |
US20040011899A1 (en) * | 2001-06-22 | 2004-01-22 | Gunter Dantes | Fuel injection valve |
US20040074999A1 (en) * | 2001-08-20 | 2004-04-22 | Gottlob Haag | Fuel injection valve |
US7073730B2 (en) * | 2001-08-20 | 2006-07-11 | Robert Bosch Gmbh | Fuel injection valve |
US6766965B2 (en) | 2001-08-31 | 2004-07-27 | Siemens Automotive Corporation | Twin tube hydraulic compensator for a fuel injector |
US6820598B2 (en) | 2002-03-22 | 2004-11-23 | Chrysalis Technologies Incorporated | Capillary fuel injector with metering valve for an internal combustion engine |
US20050081833A1 (en) * | 2002-03-22 | 2005-04-21 | Pellizzari Roberto O. | Capillary fuel injector with metering valve for an internal combustion engine |
US7137383B2 (en) | 2002-03-22 | 2006-11-21 | Philip Morris Usa Inc. | Capillary fuel injector with metering valve for an internal combustion engine |
US20070056570A1 (en) * | 2002-05-10 | 2007-03-15 | Mimmo Elia | Multiple capillary fuel injector for an internal combustion engine |
US7357124B2 (en) | 2002-05-10 | 2008-04-15 | Philip Morris Usa Inc. | Multiple capillary fuel injector for an internal combustion engine |
US6969009B2 (en) * | 2002-09-27 | 2005-11-29 | Siemens Aktiengesellschaft | Injector, especially fuel injection valve, with a piezoelectric actor |
US20050072863A1 (en) * | 2002-09-27 | 2005-04-07 | Georg Bachmaier | Injector, especially fuel injection valve, with a piezoelectric actor |
US20050199746A1 (en) * | 2003-06-11 | 2005-09-15 | Bernd Bartunek | Valve device and method for injecting a gaseous fuel |
US7225790B2 (en) | 2003-06-11 | 2007-06-05 | Westport Power Inc. | Valve device and method for injecting a gaseous fuel |
US20070131800A1 (en) * | 2003-11-12 | 2007-06-14 | Robert Bosch Gmbh | Fuel injector with direct needle control |
US20050258266A1 (en) * | 2004-05-07 | 2005-11-24 | Mimmo Elia | Multiple capillary fuel injector for an internal combustion engine |
US7337768B2 (en) | 2004-05-07 | 2008-03-04 | Philip Morris Usa Inc. | Multiple capillary fuel injector for an internal combustion engine |
WO2005124141A2 (en) * | 2004-06-14 | 2005-12-29 | Bright Charles B | Very high speed rate shaping fuel injector |
US7255290B2 (en) * | 2004-06-14 | 2007-08-14 | Charles B. Bright | Very high speed rate shaping fuel injector |
US7100577B2 (en) | 2004-06-14 | 2006-09-05 | Westport Research Inc. | Common rail directly actuated fuel injection valve with a pressurized hydraulic transmission device and a method of operating same |
US20050274360A1 (en) * | 2004-06-14 | 2005-12-15 | Westport Research Inc. | Common rail directly actuated fuel injection valve with a pressurized hydraulic transmission device and a method of operating same |
US20050274820A1 (en) * | 2004-06-14 | 2005-12-15 | Bright Charles B | Very high speed rate shaping fuel injector |
WO2005124141A3 (en) * | 2004-06-14 | 2007-04-19 | Charles B Bright | Very high speed rate shaping fuel injector |
US20060169802A1 (en) * | 2005-02-02 | 2006-08-03 | Thomas Pauer | Fuel injector with direct needle control for an internal combustion engine |
US7419103B2 (en) * | 2005-02-02 | 2008-09-02 | Robert Bosch Gmbh | Fuel injector with direct needle control for an internal combustion engine |
EP1715177A1 (de) * | 2005-04-21 | 2006-10-25 | Dell'orto S.P.A. | Piezoelektrisch Aktuator zur Steuerung einer Kraftstoffpumpe und Pumpe-Düse-Einheit |
US7307371B2 (en) | 2005-11-18 | 2007-12-11 | Delphi Technologies, Inc. | Actuator with amplified stroke length |
US20070114881A1 (en) * | 2005-11-18 | 2007-05-24 | Jensen Eric L | Actuator with amplified stroke length |
US7762478B1 (en) * | 2006-01-13 | 2010-07-27 | Continental Automotive Systems Us, Inc. | High speed gasoline unit fuel injector |
US8783229B2 (en) | 2010-06-07 | 2014-07-22 | Caterpillar Inc. | Internal combustion engine, combustion charge formation system, and method |
US8418676B2 (en) | 2010-08-10 | 2013-04-16 | Great Plains Diesel Technologies, L.C. | Programmable diesel fuel injector |
US8683982B2 (en) | 2010-08-10 | 2014-04-01 | Great Plains Diesel Technologies, L.C. | Programmable diesel fuel injector |
US8113179B1 (en) | 2010-08-10 | 2012-02-14 | Great Plains Diesel Technologies, L.C. | Programmable diesel fuel injector |
DE102012014892A1 (de) * | 2012-07-27 | 2014-01-30 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Stellantrieb und Verfahren zum Entwärmen eines in einem Stellantrieb mit einem Stellglied eingehausten Festkörperaktors |
US9899592B2 (en) | 2012-07-27 | 2018-02-20 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Actuating drive and method for cooling a solid body actuator housed in an actuating drive with an actuating element |
US9385300B2 (en) | 2013-02-06 | 2016-07-05 | Great Plains Diesel Technologies, L.C. | Magnetostrictive actuator |
US20160354966A1 (en) * | 2013-12-13 | 2016-12-08 | Discma Ag | Piston device comprising a valve controlling the inlet of the piston device |
US10857718B2 (en) * | 2013-12-13 | 2020-12-08 | Discma Ag | Piston device comprising a valve controlling the inlet of the piston device |
Also Published As
Publication number | Publication date |
---|---|
CZ291253B6 (cs) | 2003-01-15 |
DE19712921A1 (de) | 1998-10-01 |
EP0910740A1 (de) | 1999-04-28 |
WO1998044256A1 (de) | 1998-10-08 |
CZ358998A3 (cs) | 1999-04-14 |
JP2000511614A (ja) | 2000-09-05 |
KR20000015898A (ko) | 2000-03-15 |
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